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Finding the Fourth Proportional to 88.52, 133.28 and 64.64

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Solution

The fourth proportional to 88.52, 133.28 and 64.64 is: 97.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.52 : 133.28 = 64.64 : x
  2. Step 2: Convert to fraction form
    88.52/133.28 = 64.64/x
  3. Step 3: Cross multiply
    88.52x = 133.28 × 64.64
  4. Step 4: Simplify right side
    88.52x = 8,615.22
  5. Step 5: Solve for x
    x = 8,615.22/88.52
  6. Step 6: Final answer
    x = 97.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.